This study examined the factor structure and model specifications of the Interaction Anxiousness Scale (IAS) with confirmatory composite analysis (CCA) using partial least squares-structural equation modeling (PLS-SEM) with a sample of Italian adolescents ( $$n = 764$$n = 764 ). The CCA and PLS-SEM results identified the reflective nature of the IAS sub-scale scores, supporting an alternative measurement model of the IAS scores as a second-order reflective–reflective model.

In this paper, the study presented is designed to gain a deeper insight into how adolescents describe, understand, and suggest dealing with Problematic Internet Use (PIU). Eight focus groups were activated with a total of 70 students from the 9th and 11th grades (Mean _Age = 15.53 ± 1.202; Female = 44.4%) in four different schools in Southern Italy. A Thematic Analysis was applied to the verbatim transcripts, and seven macro-categories were identified throughout the discourses collected: definition of PIU, symptomatology, impact, determinants, intervention strategy, opportunities and limits of the digital world, and needs that adolescents try to satisfy by surfing the net and which the offline world does not fulfill. Participants converge in seeing PIU in terms of addiction but adopt heterogeneous viewpoints in talking about the reasons for problematic engagement and possible preventive intervention strategies. In the overall picture emerging from the responses, PIU appeared to be the outcome of a psychological dynamic emerging from the interaction of individual, interpersonal, and sociocultural dimensions.